33 lines
891 B
C
33 lines
891 B
C
#include "namespace.h"
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#include <sys/cdefs.h>
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#include <lib.h>
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#include <string.h>
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#include <assert.h>
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#include <signal.h>
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#include <string.h>
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#include <sys/signal.h>
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#include <machine/signal.h>
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int sigreturn(struct sigcontext *scp)
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{
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sigset_t set;
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/* The message can't be on the stack, because the stack will vanish out
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* from under us. The send part of ipc_sendrec will succeed, but when
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* a message is sent to restart the current process, who knows what will
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* be in the place formerly occupied by the message?
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*/
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static message m;
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/* Protect against race conditions by blocking all interrupts. */
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sigfillset(&set); /* splhi */
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sigprocmask(SIG_SETMASK, &set, NULL);
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memset(&m, 0, sizeof(m));
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m.m_lc_pm_sigset.set = scp->sc_mask;
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m.m_lc_pm_sigset.ctx = (vir_bytes)scp;
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return(_syscall(PM_PROC_NR, PM_SIGRETURN, &m)); /* normally doesn't return */
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}
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